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                            <b>1.12.</b>
                        
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                            <b>1.13.</b>
                        
                        input&amp;label基本使用
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                            <b>1.14.</b>
                        
                        from标签基本使用
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                            <b>1.15.</b>
                        
                        input拓展
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                        关系选择器
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                        id和类选择器
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                        属性选择器
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                        伪像选择器
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                        颜色属性color
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                        尺量图iconfont引用
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                        文字处理和图片处理
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                        定位属性position
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                        弹性盒子布局flex
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                        <h1 id="sass&#x8BED;&#x8A00;">sass&#x8BED;&#x8A00;</h1>
<h1 id="what&#x4ED6;&#x662F;&#x4E2A;&#x4EC0;&#x4E48;&#x4E1C;&#x897F;">what-&#x4ED6;&#x662F;&#x4E2A;&#x4EC0;&#x4E48;&#x4E1C;&#x897F;</h1>
<p>sass&#x8FD9;&#x4E2A;&#x8BED;&#x8A00;&#x7684;&#x8BDE;&#x751F;&#xFF0C;&#x4E3B;&#x8981;&#x7528;&#x4E8E;&#x66F4;&#x597D;&#x7684;&#x7F16;&#x5199;&#x548C;&#x7EF4;&#x62A4;&#x6211;&#x4EEC;&#x7684;css&#x4EE3;&#x7801;&#x3002;&#x53EF;&#x4EE5;&#x7406;&#x89E3;&#x4E3A;&#x8D85;&#x7EA7;css&#xFF08;&#x4ED6;&#x7684;&#x6587;&#x4EF6;&#x540E;&#x7F00;&#x540D;&#x662F;&#x201C;scss&#x201D;&#x3002;&#x540C;&#x7C7B;&#x578B;&#x8FD8;&#x6709;less&#xFF0C;stylus&#x3002;</p>
<h1 id="when&#x4EC0;&#x4E48;&#x65F6;&#x5019;&#x8981;&#x7528;&#x5B83;">when&#x4EC0;&#x4E48;&#x65F6;&#x5019;&#x8981;&#x7528;&#x5B83;</h1>
<p>&#x5F53;&#x4F60;&#x5199;css&#x7684;&#x65F6;&#x5019;</p>
<h1 id="why-&#x4E3A;&#x4EC0;&#x4E48;&#x8981;&#x7528;&#x5B83;">why &#x4E3A;&#x4EC0;&#x4E48;&#x8981;&#x7528;&#x5B83;</h1>
<p>&#x56E0;&#x4E3A;&#x5B83;&#x5177;&#x5907;&#x5F88;&#x591A;&#x7F16;&#x7A0B;&#x8BED;&#x8A00;&#x7684;&#x7279;&#x70B9;&#x518D;&#x91CC;&#x9762;&#xFF0C;&#x4F8B;&#x5982;&#x4EE3;&#x7801;&#x53EF;&#x4EE5;&#x5C01;&#x88C5;&#x4E3A;&#x6A21;&#x5757;&#xFF0C;&#x8FDB;&#x884C;&#x91CD;&#x7528;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x5BF9;&#x6211;&#x4EEC;&#x7684;&#x7ED3;&#x6784;&#x8FDB;&#x884C;&#x6709;&#x6761;&#x4E0D;&#x7D6E;&#x7684;&#x7F16;&#x6392;&#xFF0C;&#x8FD9;&#x4E9B;&#x90FD;&#x662F;&#x539F;&#x6765;&#x7684;css&#x6240;&#x505A;&#x4E0D;&#x5230;&#x7684;&#xFF0C;&#x5E76;&#x4E14;&#xFF0C;&#x9762;&#x5BF9;&#x65E5;&#x76CA;&#x590D;&#x6742;&#x7684;&#x7F51;&#x7AD9;&#x548C;&#x9700;&#x6C42;&#xFF0C;&#x591A;&#x4EBA;&#x534F;&#x4F5C;&#x5DF2;&#x7ECF;&#x662F;&#x4E00;&#x4E2A;&#x8D8B;&#x52BF;&#xFF0C;&#x8BA9;&#x6211;&#x4EEC;&#x7528;sass&#x53EF;&#x4EE5;&#x66F4;&#x597D;&#x7684;&#x53BB;&#x534F;&#x540C;&#x591A;&#x4EBA;&#x4EE3;&#x7801;&#x7684;&#x5206;&#x5DE5;&#x5408;&#x4F5C;</p>
<h3 id="&#x5B89;&#x88C5;">&#x5B89;&#x88C5;</h3>
<ol>
<li>ruby&#x5B89;&#x88C5;&#xFF0C;&#x5B89;&#x88C5;&#x597D;&#x7528; &apos;gem -v&apos;&#x68C0;&#x6D4B;&#x662F;&#x5426;&#x6210;&#x529F;</li>
<li>sass&#x5B89;&#x88C5;&#xFF0C;&#x5B89;&#x88C5;&#x597D;&#x7528;&#x2018;sass -v&#x2019;&#x68C0;&#x6D4B;&#x662F;&#x5426;&#x6210;&#x529F;</li>
</ol>
<h1 id="&#x4F7F;&#x7528;">&#x4F7F;&#x7528;</h1>
<p>&#x8BE6;&#x60C5;&#x5730;&#x5740;&#xFF1A;<a href="https://www.sass.hk/docs/" target="_blank">https://www.sass.hk/docs/</a></p>
<h2 id="&#x5F00;&#x542F;&#x76D1;&#x542C;">&#x5F00;&#x542F;&#x76D1;&#x542C;</h2>
<pre><code>scss --watch --style compressed (&#x76D1;&#x542C;&#x76EE;&#x5F55;&#xFF1A;&#x8F93;&#x51FA;&#x76EE;&#x5F55;)

&#x4F8B;&#x5982;&#xFF1A;
scss --watch --style compressed scss&#xFF1A;css
</code></pre><h2 id="&#x8BED;&#x6CD5;">&#x8BED;&#x6CD5;</h2>
<h3 id="1&#x53D8;&#x91CF;">1.&#x53D8;&#x91CF;</h3>
<pre><code>```
//&#x8BBE;&#x7F6E;&#x53D8;&#x91CF;,&#x65B9;&#x4FBF;&#x540E;&#x7EED;&#x91CD;&#x590D;&#x4F7F;&#x7528;&#xFF0C;&#x5E76;&#x4E14;&#x65B9;&#x4FBF;&#x7EDF;&#x4E00;&#x4FEE;&#x6539;
$h1-size:20px;
$h2-size:18px;
div .tittle{
    font-size: $h1-size;
}
p .tittle{
    font-size: h2-size;
}
```
</code></pre><h3 id="2&#x5D4C;&#x5957;">2.&#x5D4C;&#x5957;</h3>
<pre><code>.web{
    width: 1000px;
    margin: 0 auto;
    header{
        //&#x8FD9;&#x91CC;&#x5C31;&#x53EF;&#x4EE5;&#x5199;&#x5173;&#x4E8E;.web&#x91CC;&#x9762;&#x7684;&#x5B50;&#x5143;&#x7D20;header&#x7684;&#x76F8;&#x5173;&#x6837;&#x5F0F;
        .imgwarm{
            width: 100px;
            height: 100px;
            img{
                width: 100px;
            }
        }
    }
}
</code></pre><p><strong>&gt; ps:&#x8FD9;&#x6837;&#x7684;&#x5199;&#x6CD5;&#x53EF;&#x4EE5;&#x65B9;&#x4FBF;&#x6211;&#x4EEC;&#x7BA1;&#x7406;&#x5143;&#x7D20;&#x7684;&#x5C42;&#x7EA7;&#x5173;&#x7CFB;&#xFF0C;&#x66F4;&#x597D;&#x7684;&#x7EF4;&#x62A4;&#x4EE3;&#x7801;&#x3002;</strong></p>
<ol>
<li><p>&#x5982;&#x679C;&#x8981;&#x5199;&#x4F2A;&#x7C7B;&#x9009;&#x62E9;&#x5668;&#x548C;&#x4F2A;&#x5BF9;&#x8C61;&#x9009;&#x62E9;&#x5668;&#xFF0C;&#x53EF;&#x4EE5;&#x7528;&apos;&amp;&apos;&#x7B26;&#x53F7;&#x6765;&#x4EE3;&#x66FF;&#x81EA;&#x8EAB;&#xFF0C;&#x4F8B;&#x5982;</p>
<pre><code> div{
     &amp;:hover{
         background:skyblue;
     }
     &amp;::after{
         content&quot;&quot;;
     }
     ~p{
         color: pink;
     }
 }
</code></pre></li>
</ol>
<h3 id="3&#x5BFC;&#x5165;scss&#x6587;&#x4EF6;">3.&#x5BFC;&#x5165;scss&#x6587;&#x4EF6;</h3>
<p>   &#x53EF;&#x4EE5;&#x628A;&#x591A;&#x6B21;&#x91CD;&#x7528;&#x7684;&#x6837;&#x5F0F;&#x5199;&#x5230;&#x5355;&#x72EC;&#x4E00;&#x4E2A;scss&#x6587;&#x4EF6;&#x91CC;&#xFF0C;&#x5728;&#x9700;&#x8981;&#x7684;&#x65F6;&#x5019;&#x5BFC;&#x5165;&#x8FDB;&#x6765;</p>
<pre><code>//&#x5BFC;&#x5165;&#x5176;&#x5B83;scss&#x6587;&#x4EF6;
@import &quot;common/reset&quot;;
@import &quot;common/common&quot;;
div{
    color: white;
}
</code></pre><blockquote>
<p>&#x5982;&#x679C;&#x4F60;&#x4E0D;&#x5E0C;&#x671B;&#x88AB;&#x5BFC;&#x5165;&#x7684;&#x6587;&#x4EF6;&#xFF0C;&#x88AB;&#x7F16;&#x8BD1;&#x6210;css&#x6587;&#x4EF6;&#xFF0C;&#x53EF;&#x4EE5;&#x5728;&#x5B83;&#x7684;&#x540D;&#x5B57;&#x524D;&#x52A0;&#x4E00;&#x4E0B;&#x5212;&#x7EBF;&#xFF08;_&#xFF09;</p>
</blockquote>

                    
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